| 摘要 |
PROBLEM TO BE SOLVED: To enable a user to efficiently regulate the image quality of a TV set. SOLUTION: When an adjustment in image quality is started, the value of an image quality adjustment parameter P stored in a register 305a inside a signal processing unit 305 is stored in a RAM 301a, and the video signals SVb at the start of an adjustment are stored in an HDD 309 at the same time. The value (one or more) of the adjustment parameter P after an image quality adjustment is made by a user is stored in a RAM 301a, and the video signals SVb after the image quality adjustment has been made are recorded in the HDD 309. Thereafter, the various video signals SVb recorded in the HDD 309 are successively read out and fed to a display unit 306. In this state, the user is capable of comparing the image qualities of images generated by various video signals SVb with each other, so that the image whose image quality is most preferred by the user can be easily selected. The corresponding value of the adjustment parameter P is read from the RAM 301a, responding to the user's selection of the image and is stored in the register 305a.
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